x402-gated premium API endpoint on Base, pay-per-request with USDC.
What it does
This endpoint at `/api/resource/46` is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol pay-per-request APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities. The specific resource behind `/api/resource/46` is labeled "Premium API Access" but its exact functionality is not documented — the site lists many endpoints under versioned paths (e.g., `/api/v1/analytics/metrics`, `/api/v2/ai/sentiment`) but `/api/resource/46` does not appear among them. It may be a generic or numbered resource slot.
Payment is handled via the x402 protocol on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required per request is 20,000 units in the token's smallest denomination. The platform advertises a flat $0.02 per request across its listed APIs, with no API keys, no rate limits, and no minimum commitments. The endpoint accepts HTTP POST and returns `application/json`.
Because the crawled documentation pages (`/docs`, `/api`, `/pricing`, `/README`) all returned only a "Connect wallet" prompt with no substantive content, there is no schema documentation, request/response examples, or detailed description of what this particular resource returns. Prospective users should treat this as an opaque paid endpoint until further documentation is available.
Capabilities
Use cases
- —Programmatic access to a paid API resource without API key management
- —Agent-driven pay-per-request workflows using x402 and USDC on Base
- —Exploring x402-protocol payment flows for micro-transactions
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents that can autonomously pay for API calls via on-chain USDC
- —Users who want keyless, pay-as-you-go API access
Not for
- —Users who need detailed API documentation or guaranteed SLAs
- —Anyone requiring free or high-volume bulk access without per-request cost
Quick start
curl -X POST https://lowpaymentfee.com/api/resource/46
# Returns 402 with x402 payment challenge; attach X-PAYMENT header with valid payment to access the resource.Endpoint
Quality
The endpoint is live (402 challenge confirmed) and payment terms are clear, but the specific resource `/api/resource/46` is undocumented. All doc pages returned only 'Connect wallet' with no content. No request/response schema, no examples, and the endpoint's actual functionality is unknown.
Warnings
- —The endpoint path /api/resource/46 does not appear in the site's listed API catalog — its purpose is unclear.
- —All documentation pages (/docs, /api, /pricing, /README) returned no meaningful content, only a 'Connect wallet' prompt.
- —No request body schema or response schema is documented; callers cannot know what to send or what to expect.
- —The platform lists many endpoints at $0.02 each but the maxAmountRequired of 20000 raw units may not correspond to $0.02 depending on token decimals (USDC has 6 decimals, so 20000 = $0.02).
Citations
- —The endpoint returns a 402 x402 challenge on POST with USDC on Base networkhttps://lowpaymentfee.com/api/resource/46
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/resource/46
- —Listed API categories include Data & Analytics, AI & ML, Finance & Web3, and Infrastructurehttps://lowpaymentfee.com